Kinsey: Studies of Cynipidse 



15 



Andricus dimorphus variety verifactor, new variety 



Cyni2)s vacciyiii form-is [gall only!] Beutenmuller, 1913, Trans. Amer. 

 Ent. Soc, XXXIX, p. 247. Felt, 1918, N.Y. Mus. Bull., 200, p. 80. 



FEMALE. — Hairy; parapsidal grooves not continuous, smooth at 

 bottom; foveae distinct; areolet large; most of the wing veins faint. 

 HEAD : Not as wide as the thorax, somewhat enlarged behind the eyes ; 

 ruf o-piceous, almost black toward the mouth ; finely roughened, shallowly 

 and finely rugose on the face; distinctly hairy except on the vertex; 

 without malar groove. Antennas brownish, darker in places, especially 

 terminally; distinctly but not greatly thickened terminally; with 14 

 segments, the second slightly elongate, the third half again as long as 

 the fourth, the last not quite twice the length of the preceding. 

 THORAX: Wholly black; mesonotum finely coriaceous and rather 

 closely punctate and hairy; parapsidal grooves moderately broad pos- 

 teriorly, rather shallow, smooth at bottom, arcuately convergent pos- 

 teriorly, finer anteriorly, extending only half way to the pronotum; 

 median groove lacking; anterior parallel lines not prominent, slightly 

 divergent posteriorly; lateral lines rather broad, not quite smooth; 

 scutellum longer than wide, moderately rounded posteriorly, finely cori- 

 aceous rugose, punctate, and hairy, a slight median ridge indicated 

 posteriorly; foveas distinct but shallow, quite rounded, smooth at bot- 

 tom, rather broadly separated; pronotum rugoso-striate laterally; meso- 

 pleurae hairy and punctate about the edges, centrally more smooth and 

 naked, limitedly aciculate in the very center. ABDOMEN: Piceous to 

 black, browner posteriorly, the second segment smooth, with patches of 

 hairs latero-basally, the other segments microscopically punctate and 

 mostly naked; distinctly longer than high, not produced dorsally, the 

 second segment covering two-thirds of the area, its posterior edge almost 

 vertical, rounded ventrally; ventral spine long and slender, ventral 

 valves at about 60°. LEGS: Piceous black, yellow brown at the joints 

 and on the tibiae and tarsi of the front and middle legs; hairy; tarsal 

 claws of m.oderate weight, simple. WINGS: Clear; only the hind 

 margins ciliate: long and rather narrow; subcosta and cross-veins light 

 brown, the others fine and faint; areolet of moderate size or larger; 

 cubitus not continuous; radial cell open, moderately long and wide, the 

 second abscissa of the radius rather distinctly curved, the first abscissa 

 distinctly angulate, without a projection. LENGTH: 2.2-3.2 mm., aver- 

 aging nearer 3.0 mm. 



GALL. — Clustered, seed-like leaf galls. Each gall monothalamous, 

 elongate, rather cylindrical, urn-shape, broadest at the middle, less broad 

 apically, flattened at the end, taper-pointed basally, up to 4.0 mm. in 

 diameter by 6.0 mm. in length; colored dark green when young, becom- 

 ing a dark red or purplish red when old. Mostly solid and fleshy when 

 young, becoming hard, thin-walled, and hollow when old, without a 

 distinct larval cell lining. In compact clusters of up to 30 galls, at- 

 tached to the midrib, on the under sides of leaves of Quercus steUata 

 (and Q. brevilobal) . 



RANGE.— Texas: Buffalo, Hearne, Elgin, (Leander?), Austin. 



